Kiln for burning brick, lime, and similar material.



ATENTED JAN. 21, 1908.

P. GZIGLBR. G BRICK, LIME, AND SIMILA R MATERIAL.

KILN FOR BURNIN APPLICATION FILED DEC. 29, 1906.

2 SHEETS-SHEET 1 www Lmnmm '18' ggg.- v

` PATENTED JAN. 21, 1908.

, AND SIMILAR MATERIAL.

2 SHEETS-SHEET z,

YAINWAR ALRM y1 Dmft,

P. CZIGLBR. KILN IOR BURNING BRICK, LIME APPLICATION FILED DB0. ze, 1906.

' nga rw: phat. y,

gi F2 9?., v I

n* 1; If@

MTN/555555 /VENTOR' PAUL- OZ CLLE @,Q/M@m. I R

a [Oa/W6 f? ATTY5 CMM/w,

f of the KILN FOR BURNING BRICK, LIME, AND SIMILAR MATERIAL.

To all whom it may concern:

Be it known that I, PAUL CZIGLER, a subject of the Emperor of Austria-Hungary, residing at Szkes-Fejrvar, county of Fejer, Austria-Hungary, have invented new and useful Improvements in Kilns for Burning Bricks, Lime, and 'Similar Material, of which the following is a specification.

This invention relates to a kiln which is particularly adapted for burning bricks and `me, but may also be satisfactorily employed for other suitable materials.

The kiln is so constructed that the fuel may be practically completely utilized therein by compelling the re gases to be repeatedly circulated through the kiln after the escape of the waste gases, thus completely giving up their heat. For this purpose, the inclosure wall of the kiln is provided with channels or passages branching from the channel in the bottom and extending beneath the burning banquets. The fire gases pass out of the aforesaid channels into the continuous channels in the roof of the kiln and from the latter channels into the open air, thus giving up their heat. When the firing is completed, the available hot gases may be led into a neighboring kiln for preheating the same. A kiln constructed according to this principle has, in addition to its considerable saving of fuel proved by experiments, the great advantage that the burning proper and the drying take place more rapidly than in any other annular kiln which has hitherto been considered most suitable for this purpose. Vhile having the same capacity, the kiln requires a much less investment of capital and generally much less working expenses.

The kiln forming the subject matter of the invention is shown in the drawing in two forms of construction and in Figures 1-3 for burning bricks and lime.

Fig. 1 is a longitudinal vertical section kiln; Fig. 2 is a plan and Fig. 3 is a cross-section at an angle of 90 to Fig. 2. Details of a kiln are shown in Figs. 4-6, which is adapted for burning materials (such as porcelain or the like) requiring more careful treatment. Fig. 4. shows a part of the kiln in a similar view as Fig. 2;

ig. 5 is a section on line A-B of FigA; and Fig. 6 a section on line C-D of Fig. 4. Fig. 7 shows an arrangement how the gases "'"f/"VW/V/f 't U5 Wwf/fil [ef/w1.'

f ff y i @nitidi/n sifarn l PATENT oFF on.

PAUL CZIGLEP., or sZE'xns-FEJRva AUSTRIA-HUNGARY.

Specification of Letters Patent. Application filed December 29. 1906. Serial No. 349.969,.

ascending in the channels are employed for preheating a neighboring kiln.

MW 'z 5J, 77@ afl/Xi; i, Z'f f/twww imag f .2r/wy Patented Jan. 21, 1908.

The kiln which in plan is circular, or oval as shown, or of any other shape, is provided Q'- at its bottom 1 with several channels 2 j extending outwardly and arranged at regu- 6N mi lar distances apart from each other. These N; channels 2 are covered above within the G\1 inclosure wall 3 by inclined grates 4. The grates rest with their inner end upon thes bottom 1, while the other end bears upon 6 l, the intermediate roof 6 ixed in the elevated wall-opening 5. The arched chamber above the roof 6 serves for charging the kiln, while the bottom space 7 together with the space over the grate forms the ash pit, the 70m draft or current of air passing through N, 5, 7. The wall openings may be wholly or Nl partially closed by doors n ot shown in the f\ drawing.

There is provided in the bottom 1 along the 75 i; middle line of the kiln a gutter 8, both ends Q i of which are somewhat enlarged. Channels 9 .communicate with this gutter 8 and ex- :l

tend therefrom under the banquets between the grates to the wall 3, then upwards 0 V along the arched wall 3 to the roof-wall 10 8\ of the kiln and extend from here upwards along the two roof-walls, as shown in Fig. 3.

The roofing of the kiln is divided by two A longitudinal walls 11 and there are formed 85 between these walls at a suitable distance from each other channelsl?I which lead below into the inner chamber 17 of the kiln. The intermediate walls do not reach to the level of the roof-walls so that a space or 90 Q* chamber 13 is left over the same. `5

The external roof 14 adapted to be raised z and lowered in the usual manner is provided N above on the roof-wall of the kiln. N l

The channels 9 are provided above the wall 95 i 5 and the channels 12 where they communicate with the kiln chamber 17 with sliding l doors 15 adapted to be operated from withi out. Moreover, the inclosure wall is provided with one or more peep holes 16 covered 100 1 by specular gypsum or the like in the usual i l manner. v l

The o eration is as follows: After placing the bric s or the like to be burned upon the banquet i. e. after setting the kiln, the firing operation is commenced whereupon the u E spaces or chambers 7 beneath the grates and t e channels 9 and 12 as well as the external roof 14 are kept open. At the commencement of the irmg, the waste gases are withdrawn through the channels 12 which latter are kept open until the Waste gases are witho ened and the outer roof raised for cooling drawn completely puriiied. The wall openings 7 the channels 9 as well as the roof 14 remain open during the iiring operation. After shutting off the channels 12, the fire gases comin from the grate fires supplied with a regu ated draft of air are drawn up along the inner wall oi the kilnto the top of the mner chamber 17 and from thence into the bottom gutter 8, then through the channels 9 branching from the gutter 8 under the banquet and from here along the inclosure wall 3 through the roof 10 and the chamber 13 into the open air. After iiring for about 16 hours, the outer rod 14 is lowered, the channels 9 and the wall apertures 7 are shut off and the kiln left standing for two to three times twenty four hours; after the ex iration of this period, the channels 12 am the channels leading lfrom the chamber 13 to the neighboring kiln, which were closed during the entire ring operation are opened, so that the available ot gases pass over into the neighboring kiln and preheat the same. These channels are not shown in the draw- Aftera certain while, all channels are ing.

t e material.

If materials which require more careful treatment, such as porcelain or the like, are to be burned, the fire-place must be so constructed that the fire gases and incoming cold air do not come in direct contact with the material to be burned; such an arrangement is shown in Figs. 46.

The bottom 1 is raised to such an extent that the arch of the wall-opening 5 is approximately level with the floor. Consequently, the chamber above the grate is arched and this arch is provided with holes 18. The burning banquets are provided with channels 19 open above and terminat ing at two sides in the spaces above the grates. In consequence of this arrangement, the cold current of air entering through the wall openings 5, 7 cannot come in contact with the materials to be burned, so thatthese cannot crack, and the fire gases coming from the grate can also not come in direct contact with these materials.

The draft of air in the kiln may also ,be increased in that there are air draft channels 20 in the inclosure wall leading from the wall-openings 5, 7 to the grates, as shown at one part in Fig. 2.

The shape of the kiln, the construction of some parts thereof and the arrangement o the regulating devices may undergo alterations without departing from the spirit of the invention. The essence of this. invention consists in formingjin the bottom, in the inclosure wall and in the roof of thekiln, channels which communicate with one another, so that the iire gases repeatedly circulate through the kiln and thus completely give up their heat. Referring to Fig. -7 it will be seen that there branches from the chamber 13 or near thereto a channel 21. (or several channels) leading alongfthe kiln Wallin any suitable manner to the middle gutter 8 of the neighboring kiln. 70 The mouth of this channel near to the chamber 13 is closed during the firing of the kilnwhen the roof is raised as shown in Fig. 3 and is only open when the roof-is lowered, so that during the simultaneous opening of this channel communicating with the gutter 8, the gases pass in the directions as indicated by arrows out of the kiln I into the kiln II. The simultaneous uncovering of the upper mouth. of the channel 21 with the lowering of 80 the roof 14 can be elected in different ways. In the drawing, for example, the closing plate 22 for this mouth participates in the movements of the roof and is provided with a vndow aperture arranged in such a manner that the latter comes in front of the mou'th of the channel when the roof is lowered, While when the roof is raised, the full surface portion of the plate 22 shuts oil the channel mouth.

Having now particularl described and ascertained the nature o my said invention and in what manner the same is to be performed, I declare that what I claim and wish to secure by Letters Patent is 1. A kiln for burning bricks and the like comprising a bottom having a trough' 8 therein and channels 9 leading from said 'trough to the side-s of the bottom, an inclosing wall havinglchannels therein forming continuations of t e channels 9, a roof having a chamber therein into which the channels of the walls lead, said roof having channels 12 therein leading from the chamber into the kiln, and a movable roof for closing or opening said chamber to the atmosphere, substantially as described.

2. A kiln for burning bricks and the like comprising a bottom having a trough 8 therein and channels 9 leadmg from said trough to the sides of the bottom, an inclosing wall having channels therein forming continuations of the channels 9, a roof having a chamber therein into which the channels of the walls lead, said roof having channels 12 therein leading from the chamber into the kiln, a movable roof for closing or opening said chamber to the atmosphere, and doors 15 for controlling the channels 9 and 12, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

IAUL CZIGLER.

Witnesses:

JOSEPH WICKMAN, CHARLES E. ZALUM. 

